/*****************************************************************************
 * Copyright (c) 2019, Nations Technologies Inc.
 *
 * All rights reserved.
 * ****************************************************************************
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Nations' name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL NATIONS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ****************************************************************************/
/**
 * @file hw_config.c
 * @author Nations
 * @version v1.0.0
 *
 * @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
 */

/* Includes ------------------------------------------------------------------*/

#include "hw_config.h"
#include "mass_mal.h"
#include "usb_desc.h"
#include "usb_pwr.h"
#include "usb_lib.h"


/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ErrorStatus HSEStartUpStatus;
EXTI_InitType EXTI_InitStructure;

/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
 * Function Name  : Cfg_McoOut
 * Description    : Configures the main clock out.
 * Input          : None.
 * Return         : None.
 *******************************************************************************/
void Cfg_McoOut(void)
 {
    GPIO_InitType GPIO_InitStructure;
	 
    /* Output HSE clock on MCO pin*/
    RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA, ENABLE);

//    GPIO_InitStruct(&GPIO_InitStructure);
    GPIO_InitStructure.Pin             = GPIO_PIN_8;
    GPIO_InitStructure.GPIO_Mode       = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Alternate  = GPIO_AF8_COMP1;
    GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);

    RCC_ConfigMcoClkPre(RCC_MCO_CLK_DIV16);
    RCC_ConfigMco(RCC_MCO_SYSCLK);
 }

/*******************************************************************************
* Function Name  : Cfg_KeyIO
* Description    : IO configuration
* Input          : None.
* Return         : None.
*******************************************************************************/
void Cfg_KeyIO(void)
{
    GPIO_InitType GPIO_InitStructure;

    RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOC, ENABLE);

    GPIO_InitStructure.Pin = GPIO_PIN_7;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Input;
	
    GPIO_InitStructure.GPIO_Pull = GPIO_Pull_Up;

    GPIO_InitPeripheral(GPIOC, &GPIO_InitStructure);
}


/*******************************************************************************
* Function Name  : Set_System
* Description    : Configures Main system clocks & power
* Input          : None.
* Return         : None.
*******************************************************************************/
void Set_System(void)
{
		RCC_DeInit();

    /*Enable HSE*/	
    RCC->CTRL |= RCC_CTRL_HSEEN;
    while((RCC->CTRL & RCC_CTRL_HSERDF) != RCC_CTRL_HSERDF);
	
    /*Set PLL MUL*/
	  RCC_ConfigPll(RCC_PLL_SRC_HSE_DIV1, RCC_PLL_MUL_12, RCC_PLLDIVCLK_DISABLE);
    /*Enable PLL*/
    RCC->CTRL |= RCC_CTRL_PLLEN;
    while((RCC->CTRL & RCC_CTRL_PLLRDF) != RCC_CTRL_PLLRDF); 

    /*Set AHB/APB1/APB2*/	
    RCC->CFG |= RCC_CFG_AHBPRES_DIV1;
    RCC->CFG |= RCC_CFG_APB1PRES_DIV4;
    RCC->CFG |= RCC_CFG_APB2PRES_DIV2;
	
    FLASH->AC &= (uint32_t)((uint32_t)~FLASH_AC_LATENCY);
    FLASH->AC |= (uint32_t)(FLASH_AC_LATENCY_3);
	
    /* Select PLL as system clock source */
    RCC->CFG &= (uint32_t)((uint32_t) ~(RCC_CFG_SCLKSW));
    RCC->CFG |= (uint32_t)RCC_CFG_SCLKSW_PLL;
    while ((RCC->CFG & RCC_CFG_SCLKSTS) != RCC_CFG_SCLKSTS_PLL) 
    {
    }	
    /*For CLK Check*/
    Cfg_McoOut();
	
  /* MAL configuration */
		MAL_Config();
}

/*******************************************************************************
 * Function Name  : Set_USBClock
 * Description    : Configures USB Clock input (48MHz).
 * Input          : None.
 * Output         : None.
 * Return         : None.
 *******************************************************************************/
ErrorStatus Set_USBClock(uint32_t sysclk)
{
    ErrorStatus status = SUCCESS;
	
    switch(sysclk)
    {
    case SYSCLK_VALUE_48MHz: 
        RCC_ConfigUsbClk(RCC_USBCLK_SRC_PLLCLK_DIV1);				
				break;
		
    case SYSCLK_VALUE_72MHz: 
        RCC_ConfigUsbClk(RCC_USBCLK_SRC_PLLCLK_DIV1_5);										
				break;	
		
    case SYSCLK_VALUE_96MHz: 
        RCC_ConfigUsbClk(RCC_USBCLK_SRC_PLLCLK_DIV2);									
				break;	
		
    default:
        status = ERROR;					
				break;				
    }

    return status;
}


/*******************************************************************************
* Function Name  : Enter_LowPowerMode
* Description    : Power-off system clocks and power while entering suspend mode
* Input          : None.
* Return         : None.
*******************************************************************************/
void Enter_LowPowerMode(void)
{
  /* Set the device state to suspend */
  bDeviceState = SUSPENDED;
}

/*******************************************************************************
* Function Name  : Leave_LowPowerMode
* Description    : Restores system clocks and power while exiting suspend mode
* Input          : None.
* Return         : None.
*******************************************************************************/
void Leave_LowPowerMode(void)
{
  USB_DeviceMess *pInfo = &Device_Info;

  /* Set the device state to the correct state */
  if (pInfo->CurrentConfiguration != 0)
  {
    /* Device configured */
    bDeviceState = CONFIGURED;
  }
  else
  {
    bDeviceState = ATTACHED;
  }
  /*Enable SystemCoreClock*/
  SystemInit(); 
}

/*******************************************************************************
* Function Name  : USB_Interrupts_Config
* Description    : Configures the USB interrupts
* Input          : None.
* Return         : None.
*******************************************************************************/
void USB_Interrupts_Config(void)
{
		NVIC_InitType NVIC_InitStructure;

    /* 2 bit for pre-emption priority, 2 bits for subpriority */
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

    /* Enable the USB interrupt */
    NVIC_InitStructure.NVIC_IRQChannel                   = USB_LP_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority        = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    /* Enable the USB Wake-up interrupt */
    NVIC_InitStructure.NVIC_IRQChannel                   = USBWakeUp_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}


/*******************************************************************************
 * Function Name  : USB_Config.
 * Description    : Configures the USB interrupts.
 * Input          : None.
 * Output         : None.
 * Return         : None.
 *******************************************************************************/
ErrorStatus USB_Config(uint32_t sysclk)
{
    ErrorStatus status = SUCCESS;
	
    USB_Interrupts_Config();
	
    if(Set_USBClock(sysclk) == SUCCESS)
    {
        RCC_EnableAPB1PeriphClk(RCC_APB1_PERIPH_USB, ENABLE);
        status = SUCCESS;
    }
    else
    {
        status = ERROR;
    }

    return status;
}
/*******************************************************************************
* Function Name  : MAL_Config
* Description    : MAL_layer configuration
* Input          : None.
* Return         : None.
*******************************************************************************/
void MAL_Config(void)
{
  MAL_Init(0);
}




